1079 lines
21 KiB
C++
1079 lines
21 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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// ------------------------------------------------------------------
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// The Goldware Library
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// Copyright (C) 1990-1999 Odinn Sorensen
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// Copyright (C) 1999-2000 Alexander S. Aganichev
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// ------------------------------------------------------------------
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free
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// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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// MA 02111-1307, USA
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// ------------------------------------------------------------------
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// $Id$
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// ------------------------------------------------------------------
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// Input form and field editing.
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// ------------------------------------------------------------------
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#include <cstring>
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#include <gkbdcode.h>
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#include <gmemdbg.h>
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#include <gstrall.h>
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#include <gwinall.h>
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#include <gwinhelp.h>
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#include <gwinput.h>
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// ------------------------------------------------------------------
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gwinput::gwinput(gwindow &w) : window(w) {
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first_field = current = NULL;
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fill_acs = false;
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idle_attr = active_attr = edit_attr = 7;
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idle_fill = active_fill = edit_fill = ' ';
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insert_mode = true;
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done = dropped = false;
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start_id = 0;
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}
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// ------------------------------------------------------------------
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gwinput::~gwinput() {
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field* current = first_field;
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if(current) {
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do {
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field* junk = current;
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current = current->next;
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delete junk;
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} while(current);
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}
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}
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// ------------------------------------------------------------------
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void gwinput::setup(int i_attr, int a_attr, int e_attr, vchar fill, bool f_acs) {
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idle_attr = i_attr;
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active_attr = a_attr;
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edit_attr = e_attr;
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fill_acs = f_acs;
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active_fill = edit_fill = fill;
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}
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// ------------------------------------------------------------------
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bool gwinput::validate() {
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return true;
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}
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// ------------------------------------------------------------------
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void gwinput::before() {
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current->activate();
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}
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// ------------------------------------------------------------------
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void gwinput::after() {
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current->deactivate();
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}
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// ------------------------------------------------------------------
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void gwinput::add_field(int idnum, int wrow, int wcol, int field_width, string& dest, int dest_size, int cvt, int mode) {
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field* fld = new field(this, idnum, wrow, wcol, field_width, dest, dest_size, cvt, mode);
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throw_new(fld);
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if(current) {
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current->next = fld;
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fld->prev = current;
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current = fld;
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}
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else {
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first_field = current = fld;
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}
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}
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// ------------------------------------------------------------------
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bool gwinput::move_to(int wrow, int wcol) {
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field* f = field_at(wrow, wcol);
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if(f) {
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after();
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current = f;
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before();
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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gwinput::field* gwinput::field_at(int wrow, int wcol) {
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field* here = first_field;
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do {
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if(here->row == wrow)
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if(in_range(wcol, here->column, here->max_column))
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return here;
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here = here->next;
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} while(here);
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return NULL;
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}
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// ------------------------------------------------------------------
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gwinput::field* gwinput::get_field(int id) {
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field* here = first_field;
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do {
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if(here->id == id)
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return here;
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here = here->next;
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} while(here);
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return NULL;
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}
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// ------------------------------------------------------------------
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void gwinput::draw_all() {
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first();
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do {
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current->draw();
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} while(next());
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}
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// ------------------------------------------------------------------
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void gwinput::reload_all() {
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first();
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do {
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if(current->entry == gwinput::entry_new)
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*current->buf = NUL;
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else
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strxcpy(current->buf, current->destination.c_str(), current->buf_len+1);
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current->convert();
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current->buf_end_pos = strlen(current->buf);
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current->draw();
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} while(next());
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}
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// ------------------------------------------------------------------
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bool gwinput::first_visible() {
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if(first()) {
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if(not current->visible())
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if(next_visible())
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::next_visible() {
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field* here = current;
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while(here->next) {
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here = here->next;
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if(here->visible()) {
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current = here;
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return true;
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}
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::previous_visible() {
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field* here = current;
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while(here->prev) {
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here = here->prev;
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if(here->visible()) {
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current = here;
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return true;
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}
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::last_visible() {
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if(last()) {
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if(not current->visible())
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if(previous_visible())
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::first(int id) {
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if(first_field) {
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current = first_field;
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if(id)
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while(current->id != id)
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next();
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::next() {
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if(current->next) {
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current = current->next;
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::previous() {
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if(current->prev) {
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current = current->prev;
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::last() {
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if(first_field) {
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current = first_field;
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while(next())
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;
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return true;
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}
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return false;
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}
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// ------------------------------------------------------------------
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void gwinput::show_cursor() {
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if(insert_mode)
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vcursmall();
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else
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vcurlarge();
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}
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// ------------------------------------------------------------------
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void gwinput::drop_form() {
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after();
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done = true;
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dropped = true;
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}
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// ------------------------------------------------------------------
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void gwinput::form_complete() {
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after();
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done = true;
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}
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// ------------------------------------------------------------------
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void gwinput::field_complete() {
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if(validate()) {
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after();
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if(not next_visible()) {
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done = true;
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return;
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}
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before();
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}
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}
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// ------------------------------------------------------------------
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void gwinput::go_next_field() {
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after();
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if(not next_visible())
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first_visible();
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before();
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}
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// ------------------------------------------------------------------
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void gwinput::go_previous_field() {
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after();
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if(not previous_visible())
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last_visible();
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before();
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}
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// ------------------------------------------------------------------
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void gwinput::go_up() {
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int min_column = current->column;
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int max_column = current->max_column;
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int check_row = current->row - 1;
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int check_column = current->column + current->pos;
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for(int r=check_row; r>=0; r--) {
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int c;
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for(c=check_column; c<=max_column; c++) {
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if(move_to(r, c))
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return;
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}
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for(c=check_column-1; c>=min_column; c--) {
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if(move_to(r, c))
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return;
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}
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}
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}
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// ------------------------------------------------------------------
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void gwinput::go_down() {
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int max_row = window.height() - (window.has_border() ? 2 : 0) - 1;
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int min_column = current->column;
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int max_column = current->max_column;
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int check_row = current->row + 1;
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int check_column = current->column + current->pos;
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for(int r=check_row; r<=max_row; r++) {
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int c;
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for(c=check_column; c<=max_column; c++) {
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if(move_to(r, c))
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return;
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}
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for(c=check_column-1; c>=min_column; c--) {
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if(move_to(r, c))
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return;
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}
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}
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}
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// ------------------------------------------------------------------
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void gwinput::go_left() {
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if(not current->left())
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go_previous_field();
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}
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// ------------------------------------------------------------------
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void gwinput::go_right() {
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if(not current->right())
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go_next_field();
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}
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// ------------------------------------------------------------------
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void gwinput::delete_left() {
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current->delete_left();
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}
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// ------------------------------------------------------------------
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void gwinput::delete_char() {
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current->delete_char();
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}
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// ------------------------------------------------------------------
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void gwinput::go_field_begin() {
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current->home();
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}
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// ------------------------------------------------------------------
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void gwinput::go_field_end() {
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current->end();
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}
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// ------------------------------------------------------------------
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void gwinput::go_form_begin() {
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after();
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first_visible();
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before();
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current->home();
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}
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// ------------------------------------------------------------------
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void gwinput::go_form_end() {
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after();
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last_visible();
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before();
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current->end();
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}
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// ------------------------------------------------------------------
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void gwinput::toggle_insert() {
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insert_mode ^= true;
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show_cursor();
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}
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// ------------------------------------------------------------------
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void gwinput::restore_field() {
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current->restore();
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}
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// ------------------------------------------------------------------
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void gwinput::delete_left_word() {
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current->delete_word(true);
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}
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// ------------------------------------------------------------------
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void gwinput::delete_right_word() {
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current->delete_word(false);
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}
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// ------------------------------------------------------------------
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void gwinput::go_left_word() {
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current->left_word();
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}
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// ------------------------------------------------------------------
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void gwinput::go_right_word() {
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current->right_word();
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}
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// ------------------------------------------------------------------
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void gwinput::enter_char(char ch) {
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if(ch) {
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if(insert_mode)
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current->insert_char(ch);
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else
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current->overwrite_char(ch);
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}
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}
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// ------------------------------------------------------------------
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void gwinput::prepare_form() {
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cursor_was_hidden = vcurhidden();
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draw_all();
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first(start_id);
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before();
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show_cursor();
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}
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// ------------------------------------------------------------------
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void gwinput::finish_form() {
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if(not dropped) {
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first();
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do {
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current->commit();
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} while(next());
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}
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if(cursor_was_hidden)
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vcurhide();
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}
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// ------------------------------------------------------------------
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bool gwinput::handle_other_keys(gkey&) {
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return false;
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}
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// ------------------------------------------------------------------
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bool gwinput::handle_key(gkey key) {
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switch(key) {
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case Key_Esc: drop_form(); break;
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case Key_C_Ent: form_complete(); break;
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case Key_Ent: field_complete(); break;
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case Key_Tab: go_next_field(); break;
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case Key_S_Tab: go_previous_field(); break;
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case Key_Up: go_up(); break;
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case Key_Dwn: go_down(); break;
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case Key_Lft: go_left(); break;
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case Key_Rgt: go_right(); break;
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case Key_BS: delete_left(); break;
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case Key_Del: delete_char(); break;
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case Key_Home: go_field_begin(); break;
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case Key_End: go_field_end(); break;
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case Key_C_Home: go_form_begin(); break;
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case Key_C_End: go_form_end(); break;
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case Key_Ins: toggle_insert(); break;
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case Key_C_R: restore_field(); break;
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case Key_C_BS: delete_left_word(); break;
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case Key_C_T: delete_right_word(); break;
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case Key_C_Lft: go_left_word(); break;
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case Key_C_Rgt: go_right_word(); break;
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default:
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if(not handle_other_keys(key))
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enter_char(KCodAsc(key));
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}
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return not done;
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}
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// ------------------------------------------------------------------
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gwinput::field::field(gwinput* iform, int idnum, int wrow, int wcol, int field_width, string& dest, int dest_size, int cvt, int mode)
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: destination(dest)
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{
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prev = next = NULL;
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pos = buf_pos = buf_left_pos = 0;
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form = iform;
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id = idnum;
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row = wrow;
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column = wcol;
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max_pos = field_width - 1;
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max_column = wcol + max_pos;
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buf_len = dest_size - 1;
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buf = new char[dest_size]; throw_new(buf);
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conversion = cvt;
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entry = entry_mode = mode;
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attr = form->idle_attr;
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fill = form->idle_fill;
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fill_acs = form->fill_acs;
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if(entry == gwinput::entry_new)
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*buf = NUL;
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else
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strxcpy(buf, dest.c_str(), dest_size);
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convert();
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buf_end_pos = strlen(buf);
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}
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// ------------------------------------------------------------------
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gwinput::field::~field() {
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delete[] buf;
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}
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// ------------------------------------------------------------------
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bool gwinput::field::visible() {
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return max_pos != -1;
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}
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// ------------------------------------------------------------------
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void gwinput::field::convert() {
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switch(conversion) {
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case gwinput::cvt_lowercase:
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strlwr(buf);
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break;
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case gwinput::cvt_uppercase:
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strupr(buf);
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break;
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case gwinput::cvt_mixedcase:
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struplow(buf);
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break;
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}
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}
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// ------------------------------------------------------------------
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void gwinput::field::update() {
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buf_end_pos = strlen(buf);
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end();
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}
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// ------------------------------------------------------------------
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|
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void gwinput::field::activate() {
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|
buf_end_pos = strlen(buf);
|
|
entry = entry_mode;
|
|
if(entry == gwinput::entry_conditional or entry == gwinput::entry_noedit) {
|
|
attr = form->active_attr;
|
|
fill = form->active_fill;
|
|
int entry_bak = entry;
|
|
entry = gwinput::entry_update; // cheat adjust_mode() in end()
|
|
end();
|
|
entry = entry_bak;
|
|
}
|
|
else {
|
|
// 0 == entry_new, 1 == entry_update
|
|
entry ? end() : home();
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::deactivate() {
|
|
|
|
fill = form->idle_fill;
|
|
attr = form->idle_attr;
|
|
draw();
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::restore() {
|
|
|
|
strxcpy(buf, destination.c_str(), buf_len+1);
|
|
convert();
|
|
buf_end_pos = strlen(buf);
|
|
activate();
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::commit() {
|
|
|
|
destination = buf;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::move_cursor() {
|
|
|
|
form->window.move_cursor(row, column+pos);
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::draw(int from_pos) {
|
|
|
|
if(visible())
|
|
form->window.printns(row, column+from_pos, attr, buf+buf_left_pos+from_pos, 1+max_pos-from_pos, fill, attr | (fill_acs ? ACSET : 0));
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::adjust_mode() {
|
|
|
|
if(entry != gwinput::entry_update and entry != gwinput::entry_noedit) {
|
|
entry = gwinput::entry_update;
|
|
attr = form->edit_attr;
|
|
fill = form->edit_fill;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::conditional() {
|
|
|
|
if(entry == gwinput::entry_conditional) {
|
|
pos = buf_pos = buf_left_pos = buf_end_pos = 0;
|
|
*buf = NUL;
|
|
adjust_mode();
|
|
draw();
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::move_left() {
|
|
|
|
buf_pos--;
|
|
if(pos > 0) {
|
|
pos--;
|
|
move_cursor();
|
|
}
|
|
else {
|
|
buf_left_pos--;
|
|
draw();
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
void gwinput::field::move_right() {
|
|
|
|
buf_pos++;
|
|
if(pos < max_pos) {
|
|
pos++;
|
|
move_cursor();
|
|
}
|
|
else {
|
|
buf_left_pos++;
|
|
draw();
|
|
}
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::left() {
|
|
|
|
if(adjust_mode())
|
|
draw();
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
if(buf_pos > 0) {
|
|
move_left();
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::right() {
|
|
|
|
if(adjust_mode()) {
|
|
draw();
|
|
return true;
|
|
}
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
if(buf_pos < buf_end_pos) {
|
|
move_right();
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::left_word() {
|
|
|
|
if(adjust_mode())
|
|
draw();
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
if(buf_pos > 0) {
|
|
move_left();
|
|
if(not isxalnum(buf[buf_pos])) {
|
|
while(not isxalnum(buf[buf_pos]) and (buf_pos > 0))
|
|
move_left();
|
|
while(isxalnum(buf[buf_pos]) and (buf_pos > 0))
|
|
move_left();
|
|
}
|
|
else {
|
|
while(isxalnum(buf[buf_pos]) and (buf_pos > 0))
|
|
move_left();
|
|
}
|
|
|
|
if(buf_pos != 0)
|
|
move_right();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::right_word() {
|
|
|
|
if(adjust_mode())
|
|
draw();
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
if(buf_pos < buf_end_pos) {
|
|
move_right();
|
|
if(not isxalnum(buf[buf_pos])) {
|
|
while(not isxalnum(buf[buf_pos]) and ((buf_pos+1) <= buf_end_pos))
|
|
move_right();
|
|
}
|
|
else {
|
|
while(isxalnum(buf[buf_pos]) and ((buf_pos+1) <= buf_end_pos))
|
|
move_right();
|
|
while(not isxalnum(buf[buf_pos]) and ((buf_pos+1) <= buf_end_pos))
|
|
move_right();
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::delete_left() {
|
|
|
|
if(adjust_mode())
|
|
draw();
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
if(buf_pos > 0) {
|
|
left();
|
|
return delete_char();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::delete_char() {
|
|
|
|
if(adjust_mode())
|
|
draw();
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
if(buf_pos < buf_end_pos) {
|
|
buf_end_pos--;
|
|
memmove(buf+buf_pos, buf+buf_pos+1, buf_len-buf_pos);
|
|
draw(pos);
|
|
move_cursor();
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::delete_word(bool left) {
|
|
|
|
if(adjust_mode())
|
|
draw();
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
|
|
bool state = isspace(buf[buf_pos-((int) left)]);
|
|
|
|
while(left ? buf_pos > 0 : buf_pos < buf_end_pos) {
|
|
left ? delete_left() : delete_char();
|
|
|
|
if(isspace(buf[buf_pos-((int) left)]) != state)
|
|
break;
|
|
}
|
|
return true;
|
|
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::insert_char(char ch) {
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
|
|
conditional();
|
|
|
|
if(buf_end_pos < buf_len) {
|
|
int len = buf_end_pos - buf_pos;
|
|
memmove(buf+buf_pos+1, buf+buf_pos, len+1);
|
|
buf_end_pos++;
|
|
return overwrite_char(ch);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::overwrite_char(char ch) {
|
|
|
|
if(entry != gwinput::entry_noedit) {
|
|
|
|
conditional();
|
|
|
|
switch(conversion) {
|
|
case gwinput::cvt_lowercase:
|
|
ch = (char)tolower(ch);
|
|
break;
|
|
case gwinput::cvt_uppercase:
|
|
ch = (char)toupper(ch);
|
|
break;
|
|
}
|
|
|
|
buf[buf_pos] = ch;
|
|
if(buf_pos == buf_end_pos) {
|
|
buf_end_pos++;
|
|
buf[buf_end_pos] = NUL;
|
|
}
|
|
|
|
if(conversion == gwinput::cvt_mixedcase) {
|
|
struplow(buf);
|
|
draw();
|
|
}
|
|
else {
|
|
draw(pos);
|
|
}
|
|
|
|
right();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::home() {
|
|
|
|
adjust_mode();
|
|
|
|
pos = buf_pos = buf_left_pos = 0;
|
|
draw();
|
|
move_cursor();
|
|
return true;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput::field::end() {
|
|
|
|
adjust_mode();
|
|
|
|
buf_pos = buf_end_pos;
|
|
if(buf_pos == buf_len)
|
|
buf_pos--;
|
|
pos = minimum_of_two(max_pos, buf_pos);
|
|
buf_left_pos = buf_pos - pos;
|
|
draw();
|
|
move_cursor();
|
|
return true;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
bool gwinput2::run(int helpcat) {
|
|
|
|
prepare_form();
|
|
whelppcat(helpcat);
|
|
|
|
while(handle_key(getxch()));
|
|
|
|
whelpop();
|
|
finish_form();
|
|
|
|
return not dropped;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|